Arrange the words given below in a meaningful manner?
1. Key
2. Door
3. Lock
4. Room
5. Switch On

1,3,2,4,5

The answer is 1,3,2,4,5

Key → Lock → Door → Room → Switch On

The above words have been arranged according to the events that occur when we enter a locked room i.e. we open the lock with the help of key, so we take out the key put it into the lock. Then the door is opened and we enter the room. Presuming lights to be off, we first switch on the lights of the room.